1. Introduction
The Power Acoustik CBW-124 Caliber Series Subwoofer is engineered to deliver high-quality audio performance for your vehicle's sound system. This manual provides essential information for the proper installation, operation, and maintenance of your subwoofer, ensuring years of dependable service and listening enjoyment.
This subwoofer combines innovative technology with durable materials to provide state-of-the-art performance. It features a molded Polypropylene cone and Butyl Rubber surround for excellent durability and sound quality. The dual 4-ohm voice coils are wound on Kapton formers, designed for versatility in wiring configurations and improved heat dissipation.

Figure 1.1: Front view of the Power Acoustik CBW-124 subwoofer, showcasing its black cone and silver frame.
2. Safety Information
WARNING: This product can expose you to chemicals including DEHP, which is known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to www.P65Warnings.ca.gov.
- Always disconnect the vehicle's battery before performing any electrical work.
- Ensure all wiring connections are secure and properly insulated to prevent short circuits.
- When wiring this Dual Voice Coil (DVC) subwoofer for lower impedance, verify that your amplifier is compatible with the resulting load. Incompatible loads can damage the amplifier.
- Mount the subwoofer securely to prevent movement during vehicle operation, which could cause injury or damage.
- Avoid exposing the subwoofer to excessive moisture or extreme temperatures.
3. Product Features
The CBW-124 subwoofer incorporates several design elements for enhanced performance and durability:
- 6mm Top Plate & Vented T-Yoke: Designed to reduce voice coil heat, improving power handling and longevity.
- 1.50″ 4-Layer Voice Coil on Kapton Coil Former: Provides robust power handling and heat resistance.
- Nickel-Plated Quick-Disconnect Wire Terminals: Ensures secure and convenient electrical connections.
- Injection Moulded Polypropylene Cone w/ Foam Surround: Offers a balance of rigidity and flexibility for accurate bass reproduction and durability.
- Stitched Voice Coil Leads: Prevents potential damage and ensures reliable signal transfer.

Figure 3.1: Top-down view of the CBW-124 subwoofer, showing the central Power Acoustik Caliber logo on the cone.
4. What's in the Box
Upon opening the product packaging, you should find the following item:
- Power Acoustik CBW-124 12″ Caliber Series Subwoofer
Please inspect the contents for any signs of damage or missing components immediately after unpacking. If anything is amiss, contact your retailer or Power Acoustik customer support.
5. Setup
Proper setup is crucial for optimal performance and longevity of your subwoofer. This section outlines general guidelines for installation.
5.1 Mounting
The CBW-124 subwoofer is designed for flush mounting. Ensure the mounting surface is rigid and free from obstructions. Create an appropriately sized opening for the subwoofer, allowing for proper clearance and ventilation around the magnet structure.

Figure 5.1: Side profile of the CBW-124 subwoofer, illustrating its depth and the structure of the basket.
5.2 Wiring
The CBW-124 features dual 4-ohm voice coils, offering flexibility in wiring configurations (series or parallel) to achieve different impedances. Consult your amplifier's specifications to determine the optimal impedance load it can handle. Incorrect wiring can lead to amplifier damage or poor subwoofer performance.
- Parallel Wiring (2 ohms): Connect the positive terminals of both voice coils together, and the negative terminals of both voice coils together. Then connect these combined terminals to the amplifier's output. This configuration results in a 2-ohm load.
- Series Wiring (8 ohms): Connect the positive terminal of one voice coil to the negative terminal of the other voice coil. Then connect the remaining positive and negative terminals to the amplifier's output. This configuration results in an 8-ohm load.
Always ensure polarity is correct (+ to + and - to -) to prevent phase issues that can degrade sound quality.

Figure 5.2: Rear view of the CBW-124 subwoofer, showing the magnet structure and terminal connections.
6. Operating
Once installed and wired correctly, your subwoofer is ready for operation. Follow these guidelines for optimal performance:
- Break-in Period: Allow a break-in period of approximately 10-20 hours of moderate use before operating the subwoofer at high volumes. This allows the suspension components to loosen up and perform optimally.
- Gain Setting: Properly set the gain on your amplifier. Do not use the gain control as a volume knob. It should be set to match the output voltage of your head unit to the amplifier's input sensitivity.
- Crossover Settings: Use the low-pass filter (LPF) on your amplifier or head unit to send only low frequencies to the subwoofer. A typical LPF setting for a 12-inch subwoofer is between 60Hz and 100Hz.
- Subsonic Filter: If your amplifier has a subsonic filter, enable it and set it slightly below your enclosure's tuning frequency (for ported enclosures) or around 20-25Hz (for sealed enclosures) to protect the subwoofer from playing frequencies too low for its design.
- Listen for Distortion: If you hear any distortion, rattling, or unpleasant noises, immediately reduce the volume. Continued operation with distortion can damage the subwoofer.
7. Maintenance
The Power Acoustik CBW-124 subwoofer requires minimal maintenance to ensure its longevity and performance.
- Regular Cleaning: Periodically wipe down the cone and surround with a soft, dry cloth to remove dust and debris. Avoid using harsh chemicals or abrasive cleaners.
- Inspect Connections: Annually check all wiring connections for tightness and corrosion. Loose connections can lead to signal loss or overheating.
- Environmental Protection: Ensure the subwoofer is protected from direct sunlight, extreme temperatures, and moisture, which can degrade materials over time.
8. Troubleshooting
If you experience issues with your subwoofer, refer to the following common troubleshooting steps:
| Problem | Possible Cause | Solution |
|---|---|---|
| No Sound from Subwoofer |
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| Distorted Sound |
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| Weak or Muffled Bass |
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9. Specifications
Detailed technical specifications for the Power Acoustik CBW-124 Subwoofer:
| Specification | Value |
|---|---|
| Model Name | CBW-124 |
| Speaker Type | Subwoofer |
| Recommended Uses For Product | Vented |
| Subwoofer Diameter | 12 Inches |
| Unit Count | 1.0 Count |
| Included Components | Subwoofer |
| Is Waterproof | FALSE |
| Number of Items | 1 |
| Speaker Size | 12 Inches |
| Power Source | Corded Electric |
| Woofer Diameter | 12 Inches |
| Vehicle Service Type | Car |
| Audio Driver Type | Dynamic Driver |
| Audio Driver Size | 12 Inches |
| Subwoofer Connectivity Technology | Wired |
| UPC | 709483059535 |
| Manufacturer | Epsilon Electronics, Inc |
| Item Weight | 7.24 pounds |
| Item Model Number | CBW-124 |
| Brand | Power Acoustik |
| Speaker Maximum Output Power | 1500 Watts |
| Connectivity Technology | wired |
| Audio Output Mode | Surround |
| Mounting Type | Flush Mount |
10. Warranty Information
The Power Acoustik CBW-124 Subwoofer comes with a Limited Warranty. Specific terms and conditions of the warranty, including duration and coverage, are typically provided with the product packaging or available on the manufacturer's official website. Please retain your proof of purchase for any warranty claims.
Note: Warranty coverage may be contingent on professional installation by a certified technician, as indicated by some manufacturer policies.
11. Support
For further assistance, technical support, or inquiries regarding your Power Acoustik CBW-124 Subwoofer, please contact the manufacturer:
- Manufacturer: Epsilon Electronics, Inc. (Parent company of Power Acoustik)
- Brand: Power Acoustik
It is recommended to visit the official Power Acoustik website for the most up-to-date support information, FAQs, and contact details. Have your product model number (CBW-124) and purchase information ready when contacting support.





